Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships
The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the contin...
Published in: | Systematics and Biodiversity |
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Online Access: | http://hdl.handle.net/11380/1183042 https://doi.org/10.1080/14772000.2019.1649737 http://www.tandf.co.uk/journals/TSAB |
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ftunivmodena:oai:iris.unimore.it:11380/1183042 2024-04-14T08:03:42+00:00 Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships Guidetti R. Massa, Edoardo Bertolani R. Rebecchi L. Cesari M. Guidetti, R. Massa, Edoardo Bertolani, R. Rebecchi, L. Cesari, M. 2019 http://hdl.handle.net/11380/1183042 https://doi.org/10.1080/14772000.2019.1649737 http://www.tandf.co.uk/journals/TSAB eng eng country:USA info:eu-repo/semantics/altIdentifier/wos/WOS:000485546300001 firstpage:1 lastpage:21 journal:SYSTEMATICS AND BIODIVERSITY http://hdl.handle.net/11380/1183042 doi:10.1080/14772000.2019.1649737 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85073797087 http://www.tandf.co.uk/journals/TSAB info:eu-repo/semantics/closedAccess Antarctica biogeography cataphractu confocal laser scanning microscopy Cryoconicus antiarktossp. nov Hebesuncus ryani Ramazzottius sabatiniae sp. nov info:eu-repo/semantics/article 2019 ftunivmodena https://doi.org/10.1080/14772000.2019.1649737 2024-03-21T17:56:34Z The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the continental Antarctic area. In order to increase our knowledge of the underreported terrestrial meiofaunal communities within continental Antarctica, as well as to provide new information for biogeographic and evolutionary analysis of these communities, the tardigrade diversity of 11 samples collected along the coast of Victoria Land was considered. The application of an integrative approach in which morphological (Light - LM, scanning electron - SEM, and confocal laser scanning microscopy - CSLM) and molecular analysis (18S, 28S, cox1 genes) were combined allowed us to characterize the tardigrade fauna inhabiting mosses, lichens, and cyanobacterial mats of Victoria Land. These analyses allowed the detection of two tardigrade species new to science (Cryoconicus antiarktos sp. nov., Ramazzottius sabatiniae sp. nov.), and the emendation of known species ((Hebesuncus ryani Dastych and Harris, 1994, Ramazzottius nivalis Dastych, 2006, Cryoconicus ljudmilae comb. nov. (Biserov, 1997/98), and Cryoconicus cataphractus (Maucci, 1974)), together with the genus Cryoconicus. The Ramazzottius type of claws was redefined identifying three subtypes. Also, we investigated the phylogenetic position of some problematic/unresolved lineages all belonging to the family Ramazzottiidae. These data increased the knowledge of the biodiversity in Victoria Land, the number of endemic tardigrades in Antarctica, and provided evidence on the origin of Antarctic endemism. Lastly, new methods for integrative taxonomic studies on tardigrades were presented and discussed. Article in Journal/Newspaper Antarc* Antarctic Antarctica Victoria Land Tardigrade Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) Antarctic Victoria Land Systematics and Biodiversity 17 6 573 593 |
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Open Polar |
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Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS) |
op_collection_id |
ftunivmodena |
language |
English |
topic |
Antarctica biogeography cataphractu confocal laser scanning microscopy Cryoconicus antiarktossp. nov Hebesuncus ryani Ramazzottius sabatiniae sp. nov |
spellingShingle |
Antarctica biogeography cataphractu confocal laser scanning microscopy Cryoconicus antiarktossp. nov Hebesuncus ryani Ramazzottius sabatiniae sp. nov Guidetti R. Massa, Edoardo Bertolani R. Rebecchi L. Cesari M. Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
topic_facet |
Antarctica biogeography cataphractu confocal laser scanning microscopy Cryoconicus antiarktossp. nov Hebesuncus ryani Ramazzottius sabatiniae sp. nov |
description |
The underestimation of biodiversity and scarce knowledge of the biogeographic distributions of terrestrial meiofaunal component limit our understanding of the origin of Antarctic fauna. One of its main components is tardigrades; nonetheless studies on tardigrade diversity are still few in the continental Antarctic area. In order to increase our knowledge of the underreported terrestrial meiofaunal communities within continental Antarctica, as well as to provide new information for biogeographic and evolutionary analysis of these communities, the tardigrade diversity of 11 samples collected along the coast of Victoria Land was considered. The application of an integrative approach in which morphological (Light - LM, scanning electron - SEM, and confocal laser scanning microscopy - CSLM) and molecular analysis (18S, 28S, cox1 genes) were combined allowed us to characterize the tardigrade fauna inhabiting mosses, lichens, and cyanobacterial mats of Victoria Land. These analyses allowed the detection of two tardigrade species new to science (Cryoconicus antiarktos sp. nov., Ramazzottius sabatiniae sp. nov.), and the emendation of known species ((Hebesuncus ryani Dastych and Harris, 1994, Ramazzottius nivalis Dastych, 2006, Cryoconicus ljudmilae comb. nov. (Biserov, 1997/98), and Cryoconicus cataphractus (Maucci, 1974)), together with the genus Cryoconicus. The Ramazzottius type of claws was redefined identifying three subtypes. Also, we investigated the phylogenetic position of some problematic/unresolved lineages all belonging to the family Ramazzottiidae. These data increased the knowledge of the biodiversity in Victoria Land, the number of endemic tardigrades in Antarctica, and provided evidence on the origin of Antarctic endemism. Lastly, new methods for integrative taxonomic studies on tardigrades were presented and discussed. |
author2 |
Guidetti, R. Massa, Edoardo Bertolani, R. Rebecchi, L. Cesari, M. |
format |
Article in Journal/Newspaper |
author |
Guidetti R. Massa, Edoardo Bertolani R. Rebecchi L. Cesari M. |
author_facet |
Guidetti R. Massa, Edoardo Bertolani R. Rebecchi L. Cesari M. |
author_sort |
Guidetti R. |
title |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_short |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_full |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_fullStr |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_full_unstemmed |
Increasing knowledge of Antarctic biodiversity: new endemic taxa of tardigrades (Eutardigrada; Ramazzottiidae) and their evolutionary relationships |
title_sort |
increasing knowledge of antarctic biodiversity: new endemic taxa of tardigrades (eutardigrada; ramazzottiidae) and their evolutionary relationships |
publisher |
country:USA |
publishDate |
2019 |
url |
http://hdl.handle.net/11380/1183042 https://doi.org/10.1080/14772000.2019.1649737 http://www.tandf.co.uk/journals/TSAB |
geographic |
Antarctic Victoria Land |
geographic_facet |
Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica Victoria Land Tardigrade |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land Tardigrade |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000485546300001 firstpage:1 lastpage:21 journal:SYSTEMATICS AND BIODIVERSITY http://hdl.handle.net/11380/1183042 doi:10.1080/14772000.2019.1649737 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85073797087 http://www.tandf.co.uk/journals/TSAB |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/14772000.2019.1649737 |
container_title |
Systematics and Biodiversity |
container_volume |
17 |
container_issue |
6 |
container_start_page |
573 |
op_container_end_page |
593 |
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1796299987053707264 |